to switch between radeon and fglrx

A. from fglrx to radeon:
1. mhwd-gpu --set mesa
2. blacklist fglrx
3. restore the right xorg.conf.d/ file
4. put radeon radeonfb fbcon in mkinitcpio.conf and rebuild it with -p linux316
   if you want to have console prior to luks password

B. from radeon to fglrx:
1. mhwd-gpu --set catalyst
2. blacklist radeon
3. load fglrx module in modules.conf or somewhere
4. restore the right xorg.conf.d/ file


use catalyst-hook package to recompile fglrx when new kernel is added or recompiled by running
# catalyst_build_module

